LT1424CS8-5 Linear Technology, LT1424CS8-5 Datasheet
LT1424CS8-5
Specifications of LT1424CS8-5
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LT1424CS8-5 Summary of contents
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... ICs. Its unique control circuitry can maintain regulation well into discontinuous mode. Load compensation circuitry allows for improved load regula- tion. An externally activated shutdown mode reduces total supply current typical for standby operation. , LTC and LT are registered trademarks of Linear Technology Corporation. 330pF 47 ISOLATION BARRIER ...
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... Duty Cycle = 50 Duty Cycle = 50%, – Duty Cycle = 80% Duty Cycle = Minimum U W INFORMATION ORDER PART TOP VIEW NUMBER 8 R CCOMP LT1424CN8 LT1424CS8 LT1424IN8-5 5 PGND LT1424IS8-5 S8 PACKAGE 8-LEAD PLASTIC SO S8 PART MARKING = 130 C/ W (N) 14245 JA = 110 C/ W (S) JA 1424I5 = 1.4V, unless otherwise specified. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER Timing f Switching Frequency t Minimum Switch ON Time ON t Flyback Enable Delay Time ED t Minimum Flyback Enable Time EN Maximum Switch Duty Cycle Load Compensation V ...
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LT1424 TYPICAL PERFOR A CE CHARACTERISTICS Switch Saturation Voltage vs Switch Current 1.2 1.0 125 C 0 0.6 –55 C 0.4 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 SWITCH CURRENT (A) 1424-5 G01 ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Switch On Time vs Temperature 275 250 225 200 175 150 125 100 – 50 – 100 125 TEMPERATURE ( C) 1424-5 G10 PIN ...
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LT1424-5 W BLOCK DIAGRAM V IN 2.6V SHDN REGULATOR 285kHz SYNC OSCILLATOR W FLYBACK ERROR A PLIFIER DIAGRA FLYBACK ERROR AMPLIFIER LOGIC COMP COMPENSATION SGND V C GND IS OMITTED FOR CLARITY ...
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DIAGRA V SW VOLTAGE V IN GND SWITCH OFF STATE MINIMUM t ON FLYBACK AMP STATE ON OFF ENABLE DELAY DISABLED MINIMUM ENABLE TIME LT1424-5 COLLAPSE DETECT V FLBK 0.80 V FLBK ON ENABLED ...
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LT1424-5 U OPERATION The LT1424 current mode switching regulator IC that has been designed specifically for the isolated fly- back topology. The special problem normally encoun- tered in such circuits is that information relating to the output voltage ...
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U OPERATION Combination with the previous V FLBK expression for terms of the internal reference, OUT programming resistors, transformer turns ratio and diode forward voltage drop – V OUT BG ...
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LT1424-5 U OPERATION time. Certain parameters of flyback amp behavior will then be directly affected by the variable enable period. These include effective transconductance and V LOAD COMPENSATION THEORY The LT1424-5 uses the flyback pulse to obtain information about the ...
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U U APPLICATIONS INFORMATION The LT1424 application-specific 8-pin part which implements an isolated flyback switcher/controller. Three on-chip thin-film resistors are used to “program” the part for a specific application including mainly desired output voltage, transformer turns ratio and ...
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LT1424 APPLICATIONS INFORMATION pulse extends beyond the flyback pulse, loss of regulation will occur. The onset of this condition can be determined by setting the width of the flyback pulse equal to the sum of the flyback enable ...
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U U APPLICATIONS INFORMATION In further contrast to traditional current mode switchers, V pin ripple is generally not an issue with the LT1424-5. C The dynamic nature of the clamped feedback amplifier forms an effective track/hold type response, whereby the ...
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LT1424-5 PACKAGE DESCRIPTION 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 +0.889 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Implements – 9V PCMCIA Type II LAN Supply General Purpose with External Application Resistors MBR0530 + 9 100 F 10V 5V 0.12A 1N752A 1k • 12 MBR0530 + 7 100 F 10V 5V 0.12A 1N752A 1k • 10 MBR0530 + 8 100 F 5V 10V 0.12A 1k 1N752A • 11 1424-5 TA03 sn14245 14245fs LT/TP 0599 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1998 ...